#define _CRT_SECURE_NO_WARNINGS
#pragma warning(disable:4996)
#pragma warning(disable:6031)

#include <stdio.h>

int main()
{
	printf("hello world\n");
	int a = 0;
	scanf("%d", &a);
	//int b = 0;
	//scanf("%d", &b);

	return 0;
}